: Primitive DataTypes in Java

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skramani2000

4 Mar 2023

School

MIT

Department

Electrical Engineering and Computer Science

Course

6.S183-6.S192

Professor

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Document Summary

Integer values are: i. byte: this type takes up 1 byte of memory and stores values ranging from -128 to +127. Ideal for storing score in an exam or age of humans. The default value assigned to byte is 0. Examples are byte score or byte age. ii. short: this type takes up 2 bytes of memory and stores values ranging from -32768 to +32767. Ideal for storing number of employees in a large organisation or students in a learning institution. The default value assigned to short is: examples are short employeenum or short studentpopulation. iii. int: this type takes up 4 bytes of memory and store values ranging from -2,147,483,648 to +2,147,483,647. Ideal for storing the population of a country or units produced in factory. The int data type is default integral type. The default value assigned to int is 0.

Related Questions

IN JAVA

Write a class called PocketChange that models a handful of change you might find in your pocket. The class has the following specifications:
Instance Variables - all instance variables are private

o int toonies - the number of toonies in the user's pocket o int
loonies - the number of loonies in the user's pocket o int
quarters - the number of quarters in the user's pocket o int
dimes - the number of dimes in the user's pocket o int nickels -
the number of nickels in the user's pocket o int pennies - the
number of pennies in the user's pocket Methods:

o PocketChange() - default constructor assigns 0 as a default value to all instance variables.

o PocketChange(toonies, loonies, quarters, dimes, nickels, pennies) - sets the values of all the instance variables to the programmer-specified parameter values.

o Accessor and mutator methods for each instance variable - all coin values must be 0 or positive values. Exceptions should be thrown if an attempt is made to set an instance variable to a negative value.

o calcAmount() - This method calculates and returns the total amount of money in the user's pocket, based on the values in each of the instance variables.

o toString() - returns a String with the following format:

o Toonies: t o Loonies: L o Quarters: q o Dimes: d

o Nickels: n Pennies: p where t, L, q, d, n, and p are the number of toonies, loonies, quarters, dimes, nickels and pennies.

itsomaryounis7

Shorter and more consistent. Binary or base two system only allows zeros and ones, for example the number 255 in decimal system is equivalent to eight ones in the binary system. Hexadecimal numbers contain the digits 0 to 9 as well as the letters a to f, making it easier to deal with large decimal or binary numbers.

When working with numbers, it is important to understand the concept of narrowing; this happens when a variable of a smaller type is initialized with a larger type. As we store a smaller number in the larger memory space, we don't have to worry about data loss as the additional bytes in memory are filled with zeroes. Although these numbers are not truly random, they are based on some kind of mathematical formula. To generate random numbers, we can use the 'srand' (seed rand) function, which will give us two random values between one and six. To limit the range of this random number, we can use the formula shown onscreen; though this method is more complicated and not suitable for beginners, it is still a good way to learn how to generate random numbers - for example, to roll a dice.

annamalaiannamalai110

Problem: Meal gift card. Your favorite campus restaurant sells meals for $13 each meal. The restaurant requires members to pre-pay any amount of money they wish, and then purchase as many meals accordingly. You are required to write a java program correctly that would ask the user for the amount that they will pay, then display a message indicating how many meals that user will be able to purchase as well as how much funds will remain in the gift card after that.

Using exactly 1 integer constant, 3 integer variables, and 1 Scanner variable make sure to fulfill the following points:

1. Declare the following constant integer: PRICE and set it to 13.

2. Declare 3 unassigned integer variables amount, meals, balance.

3. Declare 1 Scanner variable that will record keyboard inputs.

4. Prompt the user in the console for the amount that they will pay and assign to amount (use same format and wording as in the sample outputs below). Assume the user will enter an integer value.

5. Assign to meals the result of amount / PRICE.

6. Assign to balance the result of amount % PRICE.

7. Output to the console a blank line followed by the message

With $ you can buy meals and will have a balance of $.

Where ,and are the values stored in the corresponding variables.

Based on the previous specifications your program should look and behave exactly as displayed in the cases below. Your
program should work for any double values entered by the user, not just the ones in the sample.
Note that ◦ symbol indicates a space and ↵ is a new line character. All words except for user input (in blue) must be exactly as indicated in the sample. Any extra “spaces” and/or “new lines” will be graded a wrong answer.

Note 1: You are to expect a perfect user who always enters integer numbers., do not verify the validity of user input.
Note 2: The use of libraries other than java.util.Scanner is prohibited. Your program must work for any integer values entered, not just the ones in the samples above.
Note 3: Final thought, remember that your solution is space-sensitive and fulfill the above instructions carefully and
precisely.

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: Primitive DataTypes in Java

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